f(4)=9

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Solution for f(4)=9 equation:


f(4)=9

We simplify the equation to the form, which is simple to understand 
f(4)=9

Reorder the terms in parentheses
+(+4f)=9

Remove unnecessary parentheses
+4f=+9

We move all terms containing f to the left and all other terms to the right. 
+4f=+9

We simplify left and right side of the equation. 
+4f=+9

We divide both sides of the equation by 4 to get f. 
f=2.25

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